Operative winding separator

ABSTRACT

A partition mountable on a core to form winding spaces on a bobbin, the partition having a plurality of coacting surfaces cooperatively operative to captivate and conduct a strand being wound on the core from one side of the partition to the other.

United States Patent Sears I 4 1541 OPERATIVE WINDINGSEPARATOR 72Inventor: Charles K. Sears, Chicago, 111.

[73] Assignee: Jackson Controls Company, Inc., Chicago,

Ill.

[22) Filed: Aug. 19, 1 970 [21] Appl.No.: 64,995

[52] U.S.Cl...

[56] References Cited uumzo STATES PATENTs' 1 2,604,275 7/1952 Hull.,...242/11s.41

"242/1184", 336/208 1 51] ..B65h 75/14 H0lf27/30 v [581' Field oi Search..242/i 18.41, 8; 336/l98, 208

1 51 May 9, 1972 1,272,228 -2/1942 Thornburg .f. ..242/117 3,461,4148/1969 Fedron ..-...242/11sx Primary Examiner-George F. Mautz AssistantExaminer-Edward J McCarthy Attorney-Rummler & Snow 1 1511 sneer Apartition mountable on a core to form winding spaces on a bobbin, thepartition having a plurality of coacting surfaces cooperativelyoperative to captivate vand conduct a strand being wound on the :corefrom one side of the partition to the other.

12 Claims. IZDnwing figures PATENTEDMY We 3,661,342 v SHEET 2 HF vZ//vvE/vr0/?. CHARLES K. SEARS Fi-H 5.

1 OPERATIVE WINDING SEPARATOR BACKGROUND OF THE INVENTION The instantinvention has been directedtoward the problem of constructing a coilhaving successive windings wound on a tape. After many experiments, apractical solution has been found to make up a plurality of closelyarranged separate windings which are serially connected to each otherwithout stopping thewinding machine. The separate windings are set apartby an insulating partition which is secured tov the core to form abobbin. The subdividing of'thebobbin winding is done to reduce thepotential difference betweenany two adjacent turns. By subdividing thewindings into sections is to reduce. the volts per layer to such a valuethat the magnet wire insulation will not break down. However, themanufacturing costs of sucha coil must be minimized in order that it canbe commercially practical. Onemethod of minimizing these costs is'toassure that such multiplewindings be wound quickly andefficientlywithout extensive set-up or modification of existing equipment. Also, itis desirable in many applications that each of the succeeding windingsonthe core be serially wound by a single strand in a continuous mannerwithout the need to stop at each subordinate winding to place or fit thestrand in proper orientation across the separating-partition. v

An object of the invention is to provide a partition mountable on a coreto form a bobbin therewith, wherein the partition serves to separate acoil into individualwindings and is also operative to act upon a' strandduring winding operations FIG. 7 is a sectional view: takensubstantially at line 7-7 of FIG. 5;

FIG. .8 is a sectional view taken substantially at line 8-8 of FIG. 5;

FIG. 9 is a fragmentary sectional view taken substantially at line 9-9of FIG. 3;

FIG. 10 is a fragmentary sectional view taken substantially at linel0-l0 of FIG. 3;

FIG. I l is a sectional view taken substantially at line 1 I-- I I ofFIG. 3; and 1 FIG. 12 is a sectionalview taken substantially at line12-12 of-FIG. 3'.

DESCRIPTION OF THE PREFERRED EMBODIMENT consequenceas relatedto theinvention itself.

whereby that strand is arranged transversely of the partition such thatit is in proper orientation for construction of another winding in asucceeding space. v

Another object of the invention is to provide that the partition beadaptable for usein coil-winding operations wherein the strand and thepartition move transversely and circumferentially relative to eachother.

A still further object of the foregoing is to provide that during thewinding operations, the partition be operative to captivate and conductthe strand thereacross as the stra'ndtrans versely engages theperipheral edge of the partition.

A stillfurther object of the invention is to provide that the partitionhave a plurality of cooperating surfaces coacting with the strand toeffect a transfer of the strand thereacross such that the strandtraverses through the partition inwardly of the peripheral edge thereof.

Another object of the foregoing is to provide that the action of thepartition on the strand, effecting the captivating and the transverseconducting of the strand across the partition, occur during continuouswinding operations wherein it is not necessary to interrupt the windingof the coil to effect 'such a transfer.

These and other objects and advantages will become more readilyapparent-when the following description delineating the construction andoperation of the instant invention is read in conjunction with theattached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I. is a perspective view of abobbin having separating partitions which incorporate the inventiveconcept herein disclosed;

FIG. 2 is an enlarged perspective view of one of the partitions of FIG.I; v

FIG, 3 is an elevational view of the lead or obverse side of thepartition;

FIG. 4 is a plan view of the partition;

FIG. 5 is an elevational end view of the partition;

FIG. 6 is an elevational view of the reverse shed the partition;

Turning attention to FIGS. 2 through 6, it can be seen that peripheraledge 20. The partition hasacentrally located op'en ing 22 shaped tosnugly'fit on the core 12.

As best seen in FIG. 3, a lead surface 23 is formed on the obverse side18 anddisposed angularly from the peripheral edge 20 to produce a bevelthereat which extends about the partition.

A transfer surface, generally. designated 25, defines-an indentationinthe form of a recess 26 and channel 27 (see FIG. 4) each of whichextends inwardly into the partition 14 from the peripheral edge20thereof. The recess 26 and channel 27 are cooperatively arranged toprovide communication between the obverse and reverse sides at locations inwardly of theperipheral edge 20. The recess26 extends-partiallyinto the partition from an opening 28 on the obverse side 18. It can beseen-that'the lead surface 23 terminates at the opening 28 to formthereat a side wall 30 and a common edge 31.

The other side of the recess 26 is bounded by a radially disposedintercepting surface 33 oriented in normal alignment with the principalaxisX-X of the core 12. This surface 33 is arranged in flanking relationto the opening 28 and in circumferential alignment with the common edge31. Abeveled surface34'extending angularly from the peripheral edge 20to the partially obverse side terminates at the intersecting surface 34.It can the point and is disposed in transversealignment to the commonedge 31, that is, a projection of the intercepting edge 40 traverses thecommon edge 31. Also of equal importance is that the point 38 ispositioned outwardly beyond any point on the common edge 31.

The recess 26 and channel 27 have a common back wall 41. The recess hasa bottom surface 42 which merges with a ramp surface 43 of thechannel27. The. ramp surface 43 extends inwardly between the sides (18, 19) ofthe partition from a position adjacent the intercepting edge 40 toterminate proximate the. core 12 as seen in FIG. 7 The back wall 41 hasan inwardly curving edge 45 which begins its arcuate path approximatelyfrom that portion of the recess 26 bounded by side wall 30 and continuesto curve inwardly until it terminates coincidentally with the inwardtermination of the ramp surface 43. (See FIG. 8.)

As best seen in FIG. 6, the reverse side 19 has a relief surface 48which is arranged angularly inward to form a fold line 49 at said onewall 36 of the channel 27. The relief surface 48 and its attendant foldline 49 are oriented at an angle substantially perpendicular to theprincipal axis x-x of the core 12 with the fold line 49 extendingoutwardly to the peripheral edge 20 from the place of termination of theramp surface 43 and the inwardly curving edge 45. A wiping'surface 51 isalso located on the reverse side 19. This surface 51 is angularlydisposed relative to the reverse side 19 and intersects with the reliefsurface 48 as shown.

For the purpose of disclosure only, it being understood that the presentinvention is not limited to values hereinafter described, the variouspreviously described surfaces having relative angular orientations asdesignated by letters in the figures may ,have approximate values indegrees as listed, wherein A is 45, B is 60, C, D and E are 45, F is 30,and G is 15.

The partition 14 not only serves as a permanent partition for separatingserially arranged windings on a common core, but also is operative toact upon a strand to captively transfer the same to a succeeding windingspace during winding operations. In the usual winding operation, thestrand is circumferentially moved relative to the bobbin and theprincipal axis of the core thereof. The strand is then traversed backand forth axially of the core within a winding space until a designatednumber of turns are wound thereon. When this occurs, the strand istransversely advanced until it advances across the partition 14 whereatthe strand engages the lead surface 23 as depicted in FIG. 2. It must beremembered that at this time, the strand and partition 14 are movingrelative to each other as indicated by the arrows shown in FIG. 2. Asthe strand passes into the opening 28 of the recess 26, the curving edge45 of the back wall 41 tends to give relief to the strand to moveinwardly of the partition 14. Because the lead surface 23 istransversely disposed to the intersecting surface 33 and edge 40, thestrand will be engaged thereby and guided into the channel 27. Due tothe relative circumferential movement, the strand is conducted down tothe ramp surface 43 between the walls 36 and 41 and is guided inwardlyby the inwardly curving edge 45 of the back wall 41. At the same time,the relief surface 48 guides the strand out from between the walls (36,41) to the'reverse side 19 while the strand continues inwardly of thepartition until finally it reaches the most inward part of the channel,i.e., the termination place of the ramp surface 43, the

' inwardly curving edge 45 and the fold line 49. of the relief surface48. It is here that the strand emerges from the interior of thepartition at a position adjacent the core 12 in a proper orientation forcommencement of winding operations on a succeeding winding, or, ifdesired, termination of the coil.

It can be seen by the preceding description that the instant inventionfurnishes a novel partition for separating winding on a single corewherein that partition also provides the means for engaging,captivating, and then captively conducting a strand being wound thereonacross the partition without interrupting winding operations. Thepartition protectively retains that portion of the strand disposedtherein and positions the strand emerging from the partition in asuitable location for either subsequent winding operations ortermination of the coil.

It will be appreciated that the embodiment of the invention chosen forthe purposes of illustration and description herein is that preferredbased upon requirements for achieving the objects of the invention anddeveloping the utility thereof in the most desirable manner, due regardbeing had to existing factors of economy, simplicity of design andconstruction, production methods and the improvements sought to be offected. It will be understood that the particular structure andfunctional aspect emphasized herein are not intended to exclude butrather to suggest such other modifications and adaptations as fallwithin the spirit and scopeof the invention as hereinbefore described.

lclaim:

1. In a. b 0bbin having a core and adaptable for winding thereon astrand having a transverse and circumferential relative movement betweensaid strand and said core, the improvement comprising a partitiontransversely mounted on said core and operative to receive and captivelyconduct said strand thereacross, said partition including obverse andreverse sides terminating in a peripheral edge circumferentiallydisposed about said core;

a strand transferring surface in the form of a recess extendingcircumferentially and inwardly of said peripheral edge and defining anopening with said obverse side and said transferring surface forming achannel opening to said peripheral edge and conductively communicatingsaid recess with said reverse side of said partition;

an intercepting surface on said obverse side disposed in v strandfeeding relation to said transferring surface; and a lead surface onsaid obverse side disposed to guide said strand into receiving relationwith said intercepting surface as said strand transversely engages saidperipheral edge and relatively moves along said lead surface to saidintercepting surface into said recess.

2. A partition for separating windings on a core and operative tocaptively transfer thereacross a strand movable transversely andcircumferentially relative of this partition, said partition comprisinga peripheral edge circumferentially disposed about said core; v

lead means on said partition and engageable with as it traversesagainst-said partition;

intercepting means on said partition disposed to interceptively receivethe strand from said lead means as the strand moves circumferentially ofsaid partition; and

transfer means including a recessed surface extending inwardly from saidedge to define an indentation therein extending generallycircumferentially so as to be operative for captively conducting thestrand from one side of the partition to the other. I

3. The invention as recited in claim 2 wherein said lead means comprisesa feed surface obliquely disposed relative to said core on said one sideof said partition, said feed surface extending partially about saidperipheral edgeand terminating to form a common edge with said recessedsurface.

4. The invention as recited in claim 3 wherein said intercepting meanscomprises a guide surface radially'disposed in contiguous flankingrelation to said recessed surface and forming therewith a strandintercepting edge transversely disposed in spaced relation to saidcommon edge.

5. The invention as recited in claim 4 wherein said guide surfaceextends to said peripheral edge whereat said intercepting edge forms adistal end'therewith, and said end projects outwardly from said core adistance greater than said common edge.

6. The invention as recited in claim 1 wherein said intercepting surfacebeing disposed contiguous with said transferring surface at said recessto form thereat a radially extending strand guiding edge disposedadjacent said channel.

7. The invention as recited in claim 6 wherein said lead surface beingdisposed angularly to said core in slanted orientation from saidperipheral edge to said obverse side, said lead surface extendingpartially about said peripheral edge and terminating at said opening tofonn an edge with said transferring surface, and said edge disposedacross said recess from said radially extending edge in a transversedisposition therewith.

8. The invention as recited in claim 7 wherein said strand guiding edgeterminated in an outwardly projecting distal end which radially extendsbeyond said edge formed by said lead surface with said transferringsurface.

the strand 9. The invention as recited in claim 7 wherein said partitionincludes a beveled surface sloping from said obverse side to saidchannel at said peripheral edge and extending therealong to saidtransferring and intercepting surface, said beveled, intersecting andtransferring surface forming a trihedron defining a common end pointdisposed on said radially extending edge whereat said point liesradially beyond said edge formed by said lead surface with saidtransferring surface.

10. The invention as recited in claim 7 wherein said channel extendingfrom said recess in substantial parallelism between said obverse andreverse sides and terminating at a distance spaced from said recess andthat portion of said reverse side adjacent said channel to form thereata rear wall defining a continuous rear surface of oneside of saidchannel and said recess, and said rear wall curving inwardly toward saidcore to produce an arcuate outwardly disposed and inwardly curving edgeterminating substantially at that termination of said channel which isspaced from said recess.

edge to said reverse side in angular orientation therewith, said wipingsurface extending in intersecting relation with said relief surface.

1. In a bobbin having a core and adaptable for winding thereon a strandhaving a transverse and circumferential relative movement between saidstrand and said core, the improvement comprising a partitiontransversely mounted on said core and operative to receive and captivelyconduct said strand thereacross, said partition including obverse andreverse sides terminating in a peripheral edge circumferentiallydisposed about said core; a strand transferring surface in the form of arecess extending circumferentially and inwardly of said peripheral edgeand defining an opening with said obverse side and said transferringsurface forming a channel opening to said peripheral edge andconductively communicating said recess with said reverse side of saidpartition; an intercepting surface on said obverse side disposed instrand feeding relation to said transferring surface; and a lead surfaceon said obverse side disposed to guide said strand into receivingrelation with said intercepting surface as said strand transverselyengages said peripheral edge and relatively moves along said leadsurface to said intercepting surface into said recess.
 2. A partitionfor separating windings on a core and operative to captively transferthereacross a strand movable transversely and circumferentially relativeof this partition, said partition comprising a peripheral edgecircumferentially disposed about said core; lead means on said partitionand engageable with the strand as it traverses against said partition;intercepting means on said partition disposed to interceptively receivethe strand from said lead means as the strand moves circumferentially ofsaid partition; and transfer means including a recessed surfaceextending inwardly from said edge to define an indentation thereinextending generally circumferentially so as to be operative forcaptively conducting the strand from one side of the partition to theother.
 3. The invention as recited in claim 2 wherein said lead meanscomprises a feed surface obliquely disposed relative to said core onsaid one side of said partition, said feed surface extending partiallyabout said peripheral edge and terminating to form a common edge withsaid recessed surface.
 4. The invention as recited in claim 3 whereinsaid intercepting means comprises a guide surface radially disposed incontiguous flanking relation to said recessed surface and formingtherewith a strand intercepting edge transversely disposed in spacedrelation to said common edge.
 5. The invention as recited in claim 4wherein said guide surface extends to said peripheral edge whereat saidintercepting edge forms a distal end therewith, and said end projectsoutwardly from said core a distance greater than said common edge. 6.The invention as recited in claim 1 wherein said intercepting surfacebeing disposed contiguous with said transferring surface at said recessto form thereat a radially extending strand guiding edge disposedadjacent said channel.
 7. The invention as recited in claim 6 whereinsaiD lead surface being disposed angularly to said core in slantedorientation from said peripheral edge to said obverse side, said leadsurface extending partially about said peripheral edge and terminatingat said opening to form an edge with said transferring surface, and saidedge disposed across said recess from said radially extending edge in atransverse disposition therewith.
 8. The invention as recited in claim 7wherein said strand guiding edge terminated in an outwardly projectingdistal end which radially extends beyond said edge formed by said leadsurface with said transferring surface.
 9. The invention as recited inclaim 7 wherein said partition includes a beveled surface sloping fromsaid obverse side to said channel at said peripheral edge and extendingtherealong to said transferring and intercepting surface, said beveled,intersecting and transferring surface forming a trihedron defining acommon end point disposed on said radially extending edge whereat saidpoint lies radially beyond said edge formed by said lead surface withsaid transferring surface.
 10. The invention as recited in claim 7wherein said channel extending from said recess in substantialparallelism between said obverse and reverse sides and terminating at adistance spaced from said recess and that portion of said reverse sideadjacent said channel to form thereat a rear wall defining a continuousrear surface of one side of said channel and said recess, and said rearwall curving inwardly toward said core to produce an arcuate outwardlydisposed and inwardly curving edge terminating substantially at thattermination of said channel which is spaced from said recess.
 11. Theinvention as recited in claim 9 wherein said partition includes a reliefsurface having an angular orientation from said reverse side toward saidchannel, said relief surface terminating at a fold line having the lowerpart thereof coincidental with the termination of said channel andinwardly curving edge of said rear wall.
 12. The invention as recited inclaim 11 wherein said partition includes a wiping surface slanting fromsaid peripheral edge to said reverse side in angular orientationtherewith, said wiping surface extending in intersecting relation withsaid relief surface.